How to upsample an RF signal by a non-integer factor.

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Faiyaz Kabir
Faiyaz Kabir 2019-9-16
评论： David K. 2019-9-16
Hello,
I want to upsample an RF signal by a factor of 2.5 (from 20 MHz to 50 MHz). But the MATLAB function "upsample" only works for integer factors. I know of the "resample" function, but it can only work on double precision vectors. But the problem is, my RF signal after getting read is a three-dimensional int16 data (1032x128x405 int16),
Any help or suggestion on this will be greatly appreciated.
  1 个评论
David K.
David K. 2019-9-16
Instead of upsampling by 2.5 (5/2) you can actually upsample by 5 and then downsample by 2 in order to effectively upsample by 2.5.
This website appears to go over the theory well enough.

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